A closer look at the Verge X18

N-Fold™ Technology

The faster fold

With N-Fold Technology, Tern bikes fold small and fast—in three easy steps. It’s simple enough for anybody to master. And with the handlepost folded to the outside of the package, Tern bikes can also roll when folded for easy transport.

OCL™ Frame Joint

Advanced folding technology

The key to any folding bicycle is the frame, and specifically, the folding joint at the heart of the frame. Done well, it locks the two halves of the frame together without any hint of movement or sound. It should be easy to operate and work flawlessly year after year. The OCL Joint does all of these things and is a new reference in folding frame technology.
Stronger by Design
Making the hinge taller and moving the pivoting surfaces outward from the center axis more than doubles overall strength and stiffness. It’s a difference you’ll feel from your very first ride.
Smooth Operation
The patented design puts four igus® bearings between the aluminum and stainless steel moving parts so the folding action is always smooth and friction-free.
Interlocking Joint
The front and rear joint surfaces lock together to eliminate torsional movement.
Easy to Use
Large rounded surfaces on the lever and joint bodies are easy on your hands and allow good leverage for easy operation.
Doubly Safe
Close the lever and the AutoLok automatically locks in place, for extra, easy security.
Floating Point Technology
Patented technology allows the lever to fold flat and brace against the joint for protection in transit.
Serviceable
Good things are built to last and that’s why the OCL Joint is designed to be dealer serviceable. We keep every part in stock and if your bearings ever wear out, your dealer can replace them in a few minutes.
Precision-Machined
A machining tolerance of only 50 microns ensures a tight fit and eliminates looseness and rattling.
Stainless Steel Hardware
Cold-worked stainless delivers the durability and reliability needed for daily riding in all weather conditions.

DoubleTruss™ Technology

Stiffer by design

The rear half of Tern frames use a patented 3D structure we call DoubleTruss to build in extra stiffness. It helps resist torsional forces so our bikes flex less. That means increased stiffness and much better power transfer from the pedals to the rear wheel. The proof’s in the ride.

Tarsus™ Fork

Hydroform meets function

Utilizing a single hydroformed tube mated to a precision-machined steerer, the Tarsus delivers superior strength in a shape that matches the sophisticated lines of the Verge and Eclipse frames.
Hydroformed Tubing
The process of hydroforming aligns the grain structure and strengthens the aluminum material. It also minimizes welding in the most highly stressed area of the fork.
Internal Wire Routing
If you decide to equip your Tarsus with a dynamo hub, it’s ready for internal cable routing, keeping the profile of your bike clean.

Physis™ 3D Handlepost

The new benchmark

Five patented technologies and unique manufacturing technology add up to the strongest, stiffest folding handlepost available. The Physis uses a special manufacturing process called 3D forging, which forms the post from a single piece of aluminum, eliminating all welds.
No Flex
To eliminate flex, the Physis uses a massive joint knuckle and a post that gradually tapers from thick at the base to thin. Moreover, it has 150% more clamping height between the fork steerer and the handlepost than common designs.
Flux Technology
The base of the Physis is machined so it functions as the upper race of the headset. This patented direct integration contributes to the incredible stiffness of the design.
Interlocking Halves
Joint surfaces lock together to improve torsional stiffness. We've fine-tuned the shape to virtually eliminate squeaks.
Redundant Double Bolts
Two bolts clamp the Physis to the fork steerer for improved safety.
igus® Bearings
The patented design puts sliding bearings between the moving parts so the folding action is always smooth and friction-free.
Large, Smooth Lever
Large rounded surfaces are easy on your hands and provide good leverage for easy operation.
AutoLok Technology
Close the lever and it automatically locks in place, for extra, easy security—using an aluminum pin.
Floating Point Technology
Patented technology allows the lever to fold flat and brace against the joint for protection in transit.
SpringLock Technology
Patented SpringLock technology holds the adjustment rod firmly in place so the locking lever is always properly tensioned and can never vibrate loose.
Serviceable
Good things are built to last and that’s why the Physis is designed to be fully dealer serviceable. We keep every part in stock and replacing the bearings can be done in minutes.
TriSeal Design
Three rubber seals keep weather out and the headset bearings functioning smoothly.
Precision-Machined
A machining tolerance of only 50 microns ensures a tight fit and eliminates looseness and rattling.

Syntace VRO Stem

Find your fit

Your bike should adapt to fit you―not the other way around. This adjustable stem allows you to position your handlebars further, for a more stretched and aggressive riding position, or up higher for increased comfort.
Adjustable
Stems are 47mm in length and infinitely adjustable so you can find your perfect fit.
Syntace quality
Syntace is a boutique German company renowned for their best-in-class bicycle components that are selected by many champion professional riders. They are perhaps best known for their manic attention to detail and brutal testing standards.
Light
Only 120 grams. 100% CNC machined from 6066 aluminum.
Strong
Two stems spaced widely apart means excellent torsional stiffness so go ahead and crank hard on your bars with confidence.

Kinetix™ Pro X Drop Bars

A custom fit

Kinetix Pro X drop bars are ultra light and designed to pair with the Syntace VRO stem. The Syntace VRO has ± 47mm of height and reach adjustment so you’ll always find the perfect fit.
Light
Multi-stage butting and 7050 aluminum alloy keeps the weight to a feathery 260 grams—lighter than many carbon bars.
Strong
Despite its light weight, the Kinetix Drop bar is also extremely stiff for excellent power transfer.
Compact Drops
Ergonomically shaped compact drops speed transitions from easy cruising to all-out Strava sprints.
Versatile
The center bar section is perfect for attaching lights, cameras, or smartphones.

Stasis Seatpost by Syntace

Light AND strong

The Stasis is based on Syntace’s renowned P6 design and is incredibly light, yet durably strong. It is forged from 7075 aluminum and hard-anodized for extra durability. Packed with smart engineering details that make the post easy to use and adjust.
Syntace Tested
Syntace testing is done on what they call the Red Monster and it exceeds the DIN+ standard which is typically used for freeride and downhill components. Needless to say, if it passes Syntace testing, its plenty strong enough for our bicycles.
Light
In the 33.9 x 580 mm size, the Stasis seat post weighs only 447 grams, lighter than many carbon posts of the same size.
Easy Adjustment
Syntace’s ERS technology delivers loads of fore/aft adjustment for the saddle. You can run the saddle forward for zero offset stiffness, or all the way back when you want more room to stretch in the cockpit.
Easy to Use
Two-bolt micro adjustment allows for an infinite number of saddle angles. Obsessive attention to detail means the bolts are angled outward at 40 degrees for easy tool accessibility.

Shimano Capreo Drivetrain

Optimized gearing for small wheels

Using a unique 9-26t sprocket, Shimano Capreo delivers the gear range of a 700c road bike on a 20" wheeled bike.

Kinetix™ Pro X Aero Wheels

Built for speed

Kinetix Pro X Aero wheels raise the bar for strength, aerodynamics and gear range you can expect from compact 20” wheels.
42mm Rims
Rims feature an exclusive alloy composition, a tall, wind-cutting 42 mm profile, and ultra-strong welded construction.
Sapim Spokes
Sapim, the world leader in premium spokes, supplies custom-forged CX-Wing bladed spokes.
Shimano Capreo Hub
A Shimano Capreo rear hub accommodates a special Shimano 9-26t cassette, allowing these wheels to deliver the same gear range as a 700c road bike.
Paired Spoke™ Technology
Paired Spoke lacing in the front wheel allows us to use fewer spokes at much higher tensions, resulting in a wheel that is lighter, stronger, and more aerodynamic.
Hand-Built
Kinetix Pro wheels are built by hand from start to finish by a single wheelsmith. The wheelsmith goes through at least three cycles of truing and spoke de-stressing before the wheel meets our rigorous standards.

TruShift Technology

Buttery Smooth

Folding bicycles, with their unique geometries, pose difficulties for front shifting. TruShift Technology optimizes the critical elements so you get nothing but smooth front shifting.
Custom Braze-On
Tern bicycles feature an offset bottom bracket. A custom-tooled braze-on positions the front derailleur optimally relative to the chainring for smooth front shifting.
Custom BB Spindle Length
Tern bicycles feature an oversized seat tube and require a custom spindle length for smooth shifting function. We’re fortunate that our friends at FSA are happy to make their top range MegaEVO spindles to our custom spec’s.
Pulley Position
TruShift Technology includes an optimized pulley position because lower friction equals lower shifting force.

FSA MegaEVO BB386 Crankset

Rocket forward

You wouldn’t think something as small as a bottom bracket would make a big difference to your ride experience. But you’d be wrong. The massive aluminum spindle and oversized outboard bearings make this crankset incredibly effective at turning your pedaling into forward momentum.

Tern Tail™ Masked Paint

Sweating the details

These sharp, arcing lines are only possible with painstaking hand-masking of the frame and six (!) trips through the paint line. We love how, with a top down view, you see the shape of a Tern’s tail feathers.